28 de septiembre de 2008

dealers de tubos en santiago

aquí pueden revisar precios ... en dealers en Santiago ...
yo le he comprado a Mex, super buena onda; yo me equivoque de modelo, y el amablemente no tuvo ningún inconveniente en cambiármelo.

http://www.mex.cl/power.htm

http://www.importedgoods.cl/ehxtubos.html


Rz

EL84 Tube Type Review

The Complete Reviews

Electro Harmonix EL84-EH - For most applications this is a good bet. The sound of these tubes is very smooth when biased correctly. Tonally, it’s hard to go wrong. They are pleasant to listen to and have the creamy overdrive most people look for in an EL84. They have a nice chime but it’s not overbearing. It looks a lot like the standard Sovtek but a closer inspection will reveal differences. The plate looks a bit more polished with a different coating and internally they feature precisely wrapped grid wires with a bright metal shine. The only problem with this tube is that like the Sovtek and TAD product, they are tubby. The fattest one I measured was .886 inches thick against the G.E. maximum width spec of .875 inches. For most purchasers this will not be an issue. If you have an amp that requires the tube to pass through a hole in the chassis before the pins seat in the socket you should measure the diameter of that hole. If you’re still unsure, the JJ EL84 is the closest in dimensional specs to NOS measurements and the G.E. standards for the 6BQ5.

EL84 (also 6BQ5) - Power Vacuum Tube

Sovtek EL84 - The Sovtek EL84 has been a staple for Fender, Boogie, Crate, Peavey and other manufacturers of tube amps using the ’84. This tube really is a good value. It is predictable, reliable and affordable. You can get good EL84 tone at a reasonable price. The Sovtek EL84 has been around a long time, and it has shown continuous improvement over the years. Using a matched set of properly biased tubes will yield a clear smooth sound that is fairly warm and transitions into a smooth breakup with that singing tone that EL84’s are known for. In cathode biased amps like the VOX they get a premium workout and will suffer some effects from heating and cooling. Being prone to mechanical noise in a combo amp, the EL84 is not recommended for amps with poor air circulation. The heating/cooling cycle inside an AC30 easy-bake oven seems to loosen up the mechanical structures within the tube causing them to become very noisy (mechanically) with time. This is true of any amp that uses an EL84 in a poorly ventilated chassis/cabinet arrangement, so if this is your rig, go for the JJ or Russian EL84M.In the Fender Blues Junior the tubes can really put out respectable volume and great tone for all types of music. The highs are not harsh, the mids are warm and the bottom end is not lacking. If you want to really scream try a Pro Junior with full volume. Very crunchy yet smooth with great singing sustain. I personally like my tubes biased at 60% or 70% of static dissipation and the Sovtek EL84 performed well in this range.

Russian EL84M - Some people will swear that the “M” stands for military but I’m not convinced. They look pretty much the same on the outside as normal Sovtek ‘84’s but there has to be something extra happening. The M’s seem less prone to mechanical noise and will do much better at surviving the VOX torture test. I loaded up the AC30 with a quad of EL84M’s and found that they could be run for a couple of hours without overheating. The Heat/Cool cycle still has some affect on life but the 84M lasted longer in this environment than the standard fare. A good choice if you have a cathode biased amp or like your tubes biased to more than 70% of idle dissipation.You do pay a sonic and financial price for the EL84M. They are more expensive than the standard EL84 but will last longer. Sonically they are a bit of a different animal. People refer to them as sounding stiffer or more strident with more headroom and may not like the breakup characteristics when pushed. It is really a personal judgement call. If standard EL84’s have been a problem due to heat or noise and you find they don’t last as long as you would like, try the EL84M and see what you think of the tone. In my opinion they are worth the extra money for reliability and the tone is still classic EL84.

TAD EL84-STR - The STR designation tells us that this was a Special Tube Request by the Tube Amp Doctor. In all honesty it looks and sounds like a pretty radical take on the EL84. The dimensions of this tube deserve your attention. Most tubes made in the U.S., England and Germany were built to a standard size. I often compare the new breed of EL84’s to the 1964 G.E. Essential Tube Characteristics Handbook. The TAD EL84STR is about a quarter inch shorter than any EL84 on the market and falls below the minimum GE spec of 2.344 inches. You may have to modify or adjust spring and clip type retainers for the shorter bottle. These are beefy bottles as well, with a measured maximum width of .874 inches. The GE specification is a maximum value of.875 inches. The TAD EL84STR also has the largest plate structure of any EL84 you can buy. I won’t give any more specs. Just trust me on this one, it’s enormous! There is very little clearance between the plate and the bottle and they get hot! This tube has the deepest bass, the highest highs and strident mids. In short, they sound a lot like a premium 6V6. No smooth creamy distortion here but tons of rock and roll crunch. If your bored with your normal EL84 tone these are definitely tubes to consider. Not recommended for some VOX amps as well as some smaller Mesa Boogie amps due to size issues.

Tesla / JJ EL84 - This tube has been a personal favorite of mine so the review is not entirely unbiased. With the JJ you seem to get a compromise between tone and reliability. Nice mids, sparkling highs and solid bottom end characterize this tube. From a construction standpoint I think JJ has hit the mark. As with any EL84 they can be prone to mechanical noise in combo amps. However, they seem to take the heat and vibration in stride without any negative tonal effects. In the AC30 the JJ tubes really delivered the VOX chime with lots of swirl and shimmery harmonic content. In the little Pro Junior just crank it up and you get a great, nasty, overdriven sound. That’s not bad, it’s good. When pushed hard into the land of the square wave they remind me a lot of a good 6V6. If you have tried the OEM Sovtek’s that shipped in your amp it’s worth your time to try a set of JJ EL84’s. Many convert and never go back. In cathode biased amps you can generally plug and play for that hot creamy “woman tone” that so many desire.

http://thetubestore.com/el84review.html

Rz

27 de septiembre de 2008

Nuevo habitante ....

llego un nuevo habitante a mi casa.
un ampli a tubos, 100%.
Es un Peavey Classic 30.
30 watts
3 12AX7
4 EL84


http://www.peavey.com/products/browse.cfm/action/detail/item/116335/Classic(R)%2030/112-Tweed.cfm


aun probandolo.






4 de septiembre de 2008

MULTICAB SIM..LO ULTIMO DE DSM NOISEMAKER!!!

Te gusta grabar en el PC, pero nunca le achuntas a un buen sonido microfoneando el ampli? ...
estas chato de andar cargando el ampli y tienes un buen sistema de PA? ...
quieres tocar con el equipo de hi-fi de la casa? ...

Luego de una extensa etapa de investigación y diseño

DSM NOISEMAKER PRESENTA SU ULTIMO HIJO

EL MULTICAB SIM: Analog Cabinet Modeler

y que hace esta cuestion? dirán uds ... Básicamente, emula la respuesta de frecuencias de un baffle de parlantes de guitarra, como 1x8, 2x12, 4x12, etc ...

Y qué lo diferencia del resto de los que hay por ahí (como el condor, el bulldog, etc)??
la gracia de este bicho, es que el usuario puede definir el tipo de caja o parlante que desea usar...

por ejemplo..
quieres unos medios de celestion, pero con el brillo de un eminence? no problema..
quieres un jensen de 10", pero con más medios?, cero atao...

Su completa flexibilidad esta dada por el control que se tiene de las 3 caracteristicas propias de que diferencian cada parlante:

su respuesta y resonancia de graves
su respuesta de medios
el corte resonante en agudos

... cada parlante tiene su "huella digital" que son las respuestas de cada uno de estos parámetros ... el MULTICAB SIM tiene los siguientes controles:



Gain: Ganancia/volumen: sirve para compensar las diferencias de volumen entre seteos.

LOW End response: define el corte de graves, desde los 80Hz (4x12 rango extendido), hasta los 200Hz (1x8 enano) . Por ejemplo: un celestion V30 tiene el corte en 120Hz y un eminence en 100Hz. El corte es resonante (un peak en la frecuencia de corte), por lo que da la sensacion de "pantalla" en los seteos más graves

MID response: es el control del "scoop" de medios en 400Hz que presentan algunos parlantes (como los jensen, por ejemplo)

Hi End response: el secreto de un buen cabinet simulator es su corte de agudos. El multicab sim tiene un corte de filtro de 4 polos! (-24dB/octava muy efectivo) el cual va desde los 2.5kHz, para sonidos vintage y bluseros, hasta los 4,5kHz, para sonidos más agresivos y filosos..

Bueno, no más blah-blah y les dejo un demo: OJO los primeros 30 segundos la guitarra está directa al pc (la distorsion es un DSM Burning crunch) y luego conecto el MULTICAB SIM y pruebo distintos seteos ... escuchen la variedad de respuestas de parlantes q se pueden lograr.

audio demo: http://www.goear.com/listen.php?v=bec1880 (para todos los seteos solo moví los controles del Multicab sim, no toque el pedal)

Las caracteristicas externas de la versión a la venta del pedal son:

-Caja de aluminio 1590b (el mismo acabado de la foto)

-True bypass (no tiene footswitch ya que es más una herramienta de grabación que un efecto que tengas que prender o apagar)

-Entrada 9V

-In, Out, y Mini Out (Mono)

-Precio: $50.000 (45.000 para los miembros de CHM!)

Contacto: a mi mail..SALUDOS!!!!!!!!!
daniel.pelao@gmail.com

RedZ On Line